Thread clearer for looms



June 3, 1930. R. G. TURNER ,7

THREAD CLEARER FOR LOOMS F iled Nov. 22, 1928 [l /Mam YZ/Mer PatentedJune 3, 1930 f I NU ES RAT N O F CE? MASSACHUSETTS RICHARD G. TURNER, OFwoRoEsTER, rtAssACHUsETTSQAssIGNoR To CRoMrToN a KNOWLES LOOM WoEKs; 0EwoRCEsTER, A SACHUSETTS, A CoRroRAT'ro 0Ev THREAD CLEARER EoR LOOMSApplication med November 2 2, 1928; Serial No. 321,208. l

w This invention relates to improvements in thread clearers for loomsand it'is the generalobject of the invention to provide ayieldabledevice of this type which will prevent breakage.

In the type of clearer tion relates there is a notched bar located underthe lay and positioned to engage the trailing weft end from notched barextends behind the downward pathof the ejected bobbin when the lay is onfront 'center. The picker stick on certain types of looms where aclearer is desirable moves substantially along the longitudinal axis ofthey shuttle, so that should the picker stick fail to assume its properupward position upon 'a forward beat of the loom it will striketheclearer and cause breakage.

As a result ofcontlnued transfers there accumulates on the bar ama-s'sof weftfends wvhich must bewithdrawn from time to time.

With the loom running and the bar in its normal position an element ofrisk is'involved in removing these waste ends unless the bar can bemoved to a position of safety. It is accordingly a further object of mypresent invention to providethe bar with a yielding support which willpermit the same to be movedforwardly out of the path of the lay andpicker waste ends It alsohappens'that while the loom is in operation.

occasionally a bobbin will be so disposed during a forward'stroke of.the lay as to engage the thread clearer and unless the latter isyieldable breakage either of the clearer or bobbin will result.

A more detailed ob ect of my invention re lates to the manner of.mounting the clearer. Multicolor magazines or weft'vreplenishingmechanisms are customarily made with a pair of substantially parallelplates between which the bobbins lie. These plates are held together bytie rods and it is a more"partic u lar object of my present invention toemploy one of these tie rods-as .a means for support ing the threadclearerto the end thatthe clearer and magazine may be assembled ,as aunit. A

will appear as the description proceeds, my

to which inventhe ejected bobbin. The

stick to permit clearing of the through which invention. and may priorpatent to Ryon No.1,030,7 18.

' I i screw 31 as shown .in With these and other objects in view whichinventionresides in the combination and 211 rangement of partsheremafter described and.

setv forth in the claims; I

In the accompanying drawings wherei-n' a convenient embodiment of myinvention is set forth,

applied thereto,

Fig. 2 1s atop plan view looking down wacrl'dlyin the direction ofarrows 2 in Fig. 1, an

3 of Fig. 1.

Fig. 1 is an end elevation of a weft ta, plenishing mechanism having myinventionj Fig. 3 is a detailed vertical section online of't-ie rodsoneof which is illustrated at 1221s projecting beyond the magazine M."Said extends between the outer plate 13 and tie rod theinner plate 14;and may beheld in position by screws one of which is shown at 15.Bobbins not. shown move downwardly in the magazine and are moved towardtransfer po sition by mechanism not set forth herein but wellunderstood.

The lay L is mountedon swords one of which is shown at longitudinalvertically extended slots 17 ejected nates an "appreciable 'distancebelow the ung.

den face of the lay.

The matter thus'far described is of common construction, forming no partof my present 2 be made asset forth' in I vMy invention relatesparticularly tol the thread clearer and in carrying my nvention intoeffect I providea' holder 30 which isheld to'the aforesaid tiejrodf12 bymeans. of a Figs. 1 and'3. Said extension 32 into holder has a depending33. Thelatter'rod which is extended a'rod 16 and is provided with a I anexhausted bobbin may be f from the shuttle S. A'bobbin chute; I 18is'secured to the lay and has a forwardly" and downwardly inclinedsurface 19 serving. to deflect the ejected bobbin forwardly into' A abobbin can not the latter in a normally fixed position. A notchedhorizontal arm 38 forms part ofthe cl'e'aringelement and is proportionedto extend under the lay and into the space between the latter and theupper end of the-surface lt).

The arm 38 is similar in purpose and general construction to thenotchedbar shown in Marcoux Patent No. 766,151 and. when the lay isinthe forward position shown. in Fig. 1 the arm lies behind the slot 17 sothat an ejected bobbin will. pass in front of said notched bar- Inoperation at the time of transfer the ejectedbobbin will-move downwardlyso that thetrailing endowhich extends through the eye of the shuttlewill lie in front of the arm 38. As the lay recedes one or another ofthenotchesin the arm 38 will engage the Weft end WV of the expelled bobbinE; and Withdraw. the same from the shuttle. This operation of the deviceis substantially the same as in the aforesaid Marconi; patent.

The spring is sufiiciently strong to hold the bar 38 in. proper positionfor all normal operations of the loom, adjustment of, the arm in a.vertical direction being accomplished by adjusting the rod 33 in theextension 32 and adjustmentofthe said arm in a horizontal directionbeing accomplished'by moving the holder 30. angularly with respect tothe tie rod 12.

Should the picker stick indicated at Pin Fig.v 1 be improperly placed ona forwardbeat ofthe lay so as to engage the arm 30 the latterwill moveforwardly due to the resilience ofthe spring 35; It willflbe observedthat the said arm..38 need not necessarilymove about the tievrod as apivot inasmuchas the spring 35 will permitfthe arm 38 to movev in anydirection from. its normal position. This is due partly to-the fact thatthe thread clearer 37 has a rearwardly ex: tending arm 40. In likemanner if'the attendant desires to clear an accumulation of waste fromthe arm 38-hemay do so by pulling said end forwardly and holding theportion v 40 with one hand while removing the obj ectionable-waste withthe other hand, this operation taking place while the 100m is inoperation and being accomplished of course bya deflection of the spring35.

From the. foregoing it will be seen that I have provided a simpleresilient mounting for aweft end clearer which will permit the latter tomove forwardly when engaged by a misplaced picker stickor bobbin. Itwill also be seenthat said clearer may be moved forwardly at will forthe purposes of removing waste while the loom is in operation, thespring acting to return the clearer to normal position. It will also beseen that the device is mounted on one of the tie rods of the magazineand for this reason can be made as a part of the magazine. It willfurther be seen that the adjustments previously described permit thelocation of the notched arm 38 in the correct nositionwithrespect to thelay and the bobbin chute.

Having thus describedmy invention it will be seen that changes andmodifications may be made therein by those skilled in the art withoutdeparting from the spirit and scope of the invention and I do not, wishto be'limited to the details herein disclosed, but what I claim is:

1. In a thread clearer for a loom having'a lay with a slot therein forthe passage of an ejectedbobbin, a fixed support, a notched bar to lieunder and behind the slot in the lay when the latter is in its forwardtransferring position, and a yielding connection between the support andthe notched bar whereby the latter may move forwardly from its normalposition, said connection constituting the sole means of support for thenotched bar and holding the latter in normal position.

2. In a threadclearer for a loom having a lay with a slot therein forthe passage of an ejected bobbin, a fixed support, a notched bar to lieunder and behind the slot in the lay when the latter is in its foremostposition, and a coil spring operatively connected to the notched bar,said support and notched bar being connected together by means of thespring on y,

3. In a thread clearer fora loom having a lay with a slot therein forthe passage of an eject-ed bobbin, a fixed support comprising acylindrical member, a notched bar to lie under and behind the slot inthe lay when the latter is in forward position, a cylindrical elementoperatively connected to the notched bar, and a coil spring fitted overand frictionally engaging the cylindrical member and the cylindricalelement and holding the notched bar yieldingly in normal position.

' 41111 a thread clearer for a loom having a lay with a slot therein forthe passage of an ejected bobbin, a fixed support, a notched bar moves,a notched bar located behind and below the slot when the lay is inforward positlon, a fixed support,anda yielding connecforward position,a

' tion between the fixed support and the notched bar comprising a coilspring which is the sole connectionbetween the fixed support and thenotched bar.

6. In a loom having a lay with a bobbin slot 7 therein, a weftreplenishing magazine, a tie rod forming part of the magazine, anormally fixed support angularly and longitudinally adjustable on thetie rod, a notched bar to ex tend behind and below the slot in the layWhen the latter is in forward position, and a yield- 1 ing connectionbetween the notched bar and the support on the tie rod, said connectionconstituting the sole means of support for the notched bar and holdingthe latter in normal position. I V r 7. In a weft replenishing mechanismfor a loom having a lay provided with a slot therein through which anejected bobbin may pass, a tie rod forming part of the replenishingmechanism, a holder extending downwardly from and angularly adjustablewith respect to the tie rod, a coil spring supported by the holder, anda notched rodlocated behind and below the slot in the lay when thelatter is in forward position, said spring comprising the soleconnectionbetween the holder and the notched bar and yielding to permitthe latter to move forwardly. V

I8. In a weft replenishing mechanism having a lay provided with aslotfor an ejected v bobbin, a tie rod forming part of the replenishingmechanism, a depending carrier sup-,

ported by and angularly adjustable with respect to the carrier, avertical coil spring having the upper end frictionally heldon the holderby the resilience of said spring, and a notched bar located behind andbelow the slot 1 in the lay when the latter is in forward position, thelower end of said spring being oper-' atively connected to the notchedbar.

9. In a weft replenishing mechanism having a lay provided with a slotfor an ejected bobbin, a tie rod forming part of the replenishingmechanism, a depending carrier supported by and angularly adjustablewith respect to the carrier, a vertical coil spring having the upper endfrictionally held on the holder by the resilience of said spring, and anotched bar located behind and below the slot in the lay when the latteris in forward posi- I tion, the lower end of said spring beingoperatively connected to the notched bar by having friction contact withsaid notched bar due to the resilience of the spring.

In testimony whereof I have hereunto affixed my signature.

RICHARD Gr. TURNER.

